package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        //将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

        queryWrapper.eq(Employee::getUsername, employee.getUsername());

        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询则返回登陆失败的结果
        if (emp == null) {
            return R.error("登录失败");
        }


        //4.如果密码等比不一致则返回登录失败的结果
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误登录失败");
        }

        //5.查看员工状态,如果为已禁用状态,则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6.登录成功,将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理Session中保存的当前登陆员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        //0、检查数据，哪些是需要处理的
        //0.1: 密码使用默认的123456 ， 需要加密DigestUtils.md5DigestAsHex
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //0.2： status 不需要处理，数据库默认是1
        //0.3： create_time 和 update_time ,设置为当前系统时间  LocalDateTime.now()

        //employee.setCreateTime(LocalDateTime.now());

        //employee.setUpdateTime(LocalDateTime.now());


        //0.4： create_user 和 update_user 创建人和修改人，应该是当前登陆人，从session中获取
        //long empId = (long) request.getSession().getAttribute("employee");

        //employee.setCreateUser(empId);

        //employee.setUpdateUser(empId);
        //1、调用业务层保存 employee数据
        employeeService.save(employee);
        //2、返回结果R
        return R.success("新增员工");

    }

    /**
     * 员工信息分页查询
     */
    @GetMapping("/page")
    public R<Page> page(Integer page, Integer pageSize, String name) {
        log.info("page = {},pagesize={},name={}", page, pageSize, name);
        //构造分页查询
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();

        //添加过滤条件

        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        //添加排序条件

        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    /**
     * 启用,禁用员工账号
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        //long empId = (long) request.getSession().getAttribute("employee");
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据ID查询员工
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable long id){
        Employee employee = employeeService.getById(id);
        if (employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }
   /* @PutMapping
    public R<String> updateByid(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        long empId = (long) request.getSession().getAttribute("employee");

        employee.setUpdateUser(empId);

        employee.setUpdateTime(LocalDateTime.now());

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");

    }*/
}
